Trail Runs in California — 2026

There are 42 trail runs in California scheduled for 2026. The next is the Colby Mountain Trailfest in Butte Meadows on September 5. California trail runs run primarily September through June.

Colby Mountain Trailfest

Sat, Sep 5 · Butte Meadows, CA Butte Meadows

5k12k24k

From $40 Open Closing Soon 30 spots left

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Mammoth Bar Trail Runs

Sun, Sep 6 · Auburn, CA Auburn

10KHalf Marathon

From $49 Closed

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Diablo Trail Run

Sun, Sep 6 · Clayton, CA Clayton

4 Mi10 MiHalf Marathon +2

From $50 Open Closing Soon

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The Honey Badger Half (& 10K/5K)

Sun, Sep 13 · Santa Venetia, CA Santa Venetia

The Honey Badger Half MarathonThe Honey Badger Half Marathon VIRTUAL OPTIONThe Honey Badger 10K +3

From $30 Open Closing Soon

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SGRAIL Marin - Triathlon & Trail Half Marathon

Fri, Oct 2 · San Rafael, CA San Rafael

Trail Half MarathonOlympic RelayOlympic Triathlon +2

From $0 Open

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Cirque Series - Mt Baldy, CA

Sat, Oct 3 · Mt Baldy, CA Mt Baldy

Sport Division (beginner / intermediate)VolunteerExpert Division +1

From $0 Open

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Rock It in Chino Hills 5K & 10K

Sat, Oct 10 · Brea, CA Brea

Rock It in Chino Hills 5KRock It in Chino Hills 10K

From $50 Open Closing Soon

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Rancho Cuyamaca State Park

Sat, Oct 10 · Julian, CA Julian

Traditional - AdvancedTraditional - BeginnerTraditional - Intermediate

From $15 Closed

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Heart of Cool Trail Run

Sat, Oct 17 · Cool, CA Cool

5k Trail Run/Walk10k Run/WalkTrail Half Marathon

From $30 Open

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SPACEROCK Trail Race

Sat, Oct 17 · Aqua Dulce, CA Aqua Dulce

5K10KHalf Marathon +1

From $70 Open

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Lake Hodges Trail Festival

Sat, Oct 17 · San Diego, CA San Diego

Kid's 1 Mile Fun RunStroller Trail 5k5k (Youth Under 19) +8

From $15 Open 40 spots left

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The Jackalope Lope

Sat, Oct 17 · Redding, CA Redding

8.5 Mile20.5 Mile52k

From $65 Closed

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Fleet Feet Fall Classic - Trail October 18th, 2026

Sun, Oct 18 · Chico, CA Chico

4 Mile Endurance Challenge4 Mile (Single Loop)Fall Classic Half Marathon

From $40 Open 100 spots left

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ZombieRunner Halloween

Sat, Oct 31 · San Jose, CA San Jose

5K5K (12 yo & under)5K (13 - 17 yo) +5

From $25 Open

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Lake Chabot Trail Run

Sat, Nov 7 · Castro Valley, CA Castro Valley

5K8KHalf Marathon +3

From $25 Open 30 spots left

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ZombieRunner Quarry Lakes

Sat, Nov 14 · Fremont, CA Fremont

5K5K (12 yo & under)5K (13 - 17 yo) +4

From $25 Open

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Catalina Island Half-Marathon & 10K

Sat, Nov 14 · Avalon, CA Avalon

Kids Fun RunCatalina Island 10KCatalina Island Half Marathon +1

From $20 Open Closing Soon 50 spots left

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Zoom Turkey Trot

Thu, Nov 26 · San Jose, CA San Jose

5K (12 yo & under)5K5K (13 - 17 yo) +4

From $25 Open

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San Diego 50 & Trail Runs

Sat, Jan 9 · Escondido, CA Escondido

Elevated Youth 1 MilerStroller Trail 5kValley 5M (Youth Under 19) +7

From $15 Open

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Crystal Springs Trail Run

Sun, Jan 17 · Woodside, CA Woodside

8KHalf Marathon35K +2

From $60 Open

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Hollywood Sign Run | Hike - 8M | 8K | 5K | Kid

Sun, Jan 31 · Los Angeles, CA Los Angeles

P-2.2K Kid RunGriffith Park 5K Trail ChallengeMt Hollywood 8K +1

From $25 Open Closing Soon 55 spots left

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Dalton Canyon Ultra

Sat, Feb 6 · Glendora, CA Glendora

Dalton Canyon 10K SoloDalton Canyon Ultra 50K SoloDalton Canyon 50K: 4 Person Relay +1

From $65 Open

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Golden Gate Trail Run

Sat, Feb 6 · Sausalito, CA Sausalito

8KHalf MarathonMarathon +2

From $60 Open 50 spots left

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FOURmidable

Sat, Feb 20 · Auburn, CA Auburn

FOURmidable 13kFOURmidable 13kFOURmidable Half Marathon + +5

From $40 Open

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Montara Mountain Trail Run

Sat, Feb 20 · Pacifica, CA Pacifica

10K10KHalf Marathon +7

From $60 Open

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Zoom Angel Island

Sun, Feb 28 · Tiburon, CA Tiburon

5 mi5 mi10 mi +3

From $60 Open

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Zoom San Francisco

Sat, Mar 13 · San Francisco, CA San Francisco

5K (13 - 17 yo)5K (13 - 17 yo)5K (12 yo & under) +11

From $25 Open

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Catalina Island Marathon, 10K, 5K

Sat, Mar 13 · Avalon, CA Avalon

Kids RunKids RunCatalina Island 5K +7

From $25 Open 30 spots left

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VALENCIA Trail Race

Sat, Mar 20 · Valencia, CA Valencia

10K10KHalf Marathon +3

From $67 Open

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Redwood (Spring) Trail Run

Sat, Mar 20 · Oakland, CA Oakland

5K (Accompanying Adults for Children)5K5mi (12 yo & under) +13

From $30 Open

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Rock It in El Moro Canyon 6K & 10 Miler

Sat, Apr 3 · Laguna Beach, CA Laguna Beach

Rock It in El Moro Canyon 6KRock It in El Moro Canyon 6KRock It in El Moro Canyon 10 Miler +1

From $65 Open

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Bedrock Valley Trail Runs

Sat, Apr 3 · Hemet, CA Hemet

Elevated Youth 1MElevated Youth 1MSTAMPEDE 5K +24

From $15 Open

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Nature Made Great Race: Half Marathon, 5K, 10K, 15K, 10M, 1M

Sat, Apr 10 · Agoura Hills, CA Agoura Hills

1 MILE - All AgesUnited Track 1 MILE - All AgesDEENA KASTOR 5K +11

From $32.07 Closed 76 spots left

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Horseshoe Lake Trail Run

Sat, Apr 17 · Los Gatos, CA Los Gatos

5 mi5 miHalf Marathon +7

From $60 Open

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No Foolin' Foot Race

Sat, Apr 24 · San Carlos, CA San Carlos

1K Kids Course1K Kids Course5K +5

From $20 Closed

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SPASM Lake Chabot Trail Run

Sat, Apr 24 · Castro Valley, CA Castro Valley

5K8K8K +8

From $0 Open

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Santa Clarita Trail Race

Sat, May 1 · Santa Clarita, CA Santa Clarita

1-Mile Hike1-Mile Hike5K +16

From $40 Open Closing Soon

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Miwok 100K Trail Race presented by The North Face

Sat, May 1 · Stinson Beach, CA Stinson Beach

16-week Training PlanMiwok 100k PLUS 16 week Training PlanMiwok 100K +5

From $150 Closed 39 spots left

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Grizzly Peak Trail Run

Sat, May 8 · Berkeley, CA Berkeley

10K10KHalf Marathon +7

From $60 Open

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Cinderella Trail Run

Sat, Jun 5 · Oakland, CA Oakland

8K8KHalf Marathon +7

From $60 Open

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Griffith Park Trail Marathon Relay & 8K

Sun, Jun 6 · Los Angeles, CA Los Angeles

Griffith Park 8KGriffith Park 8KMarathon Relay Team (up to 5) +1

From $45 Closed

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2027 Lake Chabot Trail Challenge (Half Marathon & 5K)

Sun, Jun 6 · Castro Valley, CA Castro Valley

5K Run5K RunHalf Marathon +1

From $40 Open

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